Results 21 to 30 of about 18,274 (245)

Two Novel Naphthalene Glucosides and an Anthraquinone Isolated from Rumex dentatus and Their Antiproliferation Activities in Four Cell Lines

open access: yesMolecules, 2012
An ethyl acetate extract of the roots of Rumex dentatus L. was investigated. Three compounds were identified by their spectroscopic data as chrysophanol (1), 6-methyl-7-acetyl-1, 8-dihydroxy-3-methoxy naphthalene-1-O-β-D(L)-glucoside (2) and 6-methyl-7 ...
Yanxia Han   +6 more
doaj   +1 more source

Applying hierarchical resource selection concepts to solving crop damage caused by birds

open access: yesConservation Science and Practice, 2021
Recovery of Greater Sandhill Cranes (Grus canadensis tabida) is a conservation success but will increase the potential for crop damage if problems caused by high crane density remain unresolved.
Jeb A. Barzen   +3 more
doaj   +1 more source

Synthesis and Antitumor Activities of Derivatives of the Marine Mangrove Fungal Metabolite Deoxybostrycin

open access: yesMarine Drugs, 2012
Deoxybostrycin (1) is an anthraquinone compound derived from the marine mangrove fungus Nigrospora sp. No. 1403 and has potential to be a lead for new drugs because of its various biological properties.
Zhi-Gang She   +9 more
doaj   +1 more source

Electrocatalytic Depolymerization of Self-Immolative Poly(Dithiothreitol) Derivatives

open access: yesMolecules, 2022
We report the use of electrogenerated anthraquinone radical anion (AQ•−) to trigger fast catalytic depolymerization of polymers derived from poly(dithiothreitol) (pDTT)—a self-immolative polymer (SIP) with a backbone of dithiothreitols connected with ...
Magnus Hansen-Felby   +2 more
doaj   +1 more source

Potential of natural repellents methylanthranilate and anthraquinone applied on maize seeds and seedlings against house sparrow (Passer domesticus) in captivity

open access: yesBrazilian Journal of Biology, 2018
Various bird pests caused severe economic losses to valuable crops and fruit orchards all over the world. Among the birds, house sparrow is also considered to cause heavy plunder, not only to seeds of crops but also seedlings especially in organic ...
S. Ahmad   +8 more
doaj   +1 more source

Anthraquinones tautomerism: VII. Hydroxy-substituted anthraquinones

open access: yesRussian Journal of Organic Chemistry, 2007
Tautomerism of β-mono-, β,β'-dihydroxyanthraquinones, and their anions was studied for the first time by quantum-chemical and correlation methods. 2-Hydroxyanthraquinone exists exclusively in 9,10-quinoid form, and its ionization involves a tautomeric transformation into 10-oxido-2,9- anthraquinone.
Fain V.Ya., Zaitsev B.E., Ryabov M.A.
openaire   +3 more sources

1,4-Dihydroxy-2,3-dinitro-9,10-anthraquinone

open access: yesIUCrData, 2016
In the title compound, C14H6N2O8, the anthraquinone unit is essentially planar [maximum deviation = 0.0645 (10) Å], and there are two intramolecular O–H...O hydrogen bonds forming S(6) motifs. The planes of the two nitro substituents make dihedral angles
Wataru Furukawa   +3 more
doaj   +1 more source

Anthraquinones as Inhibitors of SOS RAS-GEF Activity

open access: yesBiomolecules, 2021
Recent breakthroughs have reignited interest in RAS GEFs as direct therapeutic targets. To search for new inhibitors of SOS GEF activity, a repository of known/approved compounds (NIH-NACTS) and a library of new marine compounds (Biomar Microbial ...
Alberto Fernández-Medarde   +6 more
doaj   +1 more source

Solubility of Anthraquinone Derivatives in Supercritical Carbon Dioxide: New Correlations

open access: yesMolecules, 2021
Solubility of several anthraquinone derivatives in supercritical carbon dioxide was readily available in the literature, but correcting ability of the existing models was poor.
Ratna Surya Alwi   +2 more
doaj   +1 more source

Thioacetyl-Terminated Ferrocene-Anthraquinone Conjugates: Synthesis, Photo- and Electrochemical Properties Triggered by Protonation-Induced Intramolecular Electron Transfer

open access: yesMolecules, 2010
Two thioacetyl-terminated ferrocene-anthraquinone donor-acceptor molecules with different π-electron conjugative units have been synthesized via a series of Stille and Sonagashira reactions.
Masaki Murata   +5 more
doaj   +1 more source

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